scholarly journals Mechanical, thermal, morphological, and rheological characteristics of high performance 3D-printing lignin-based composites for additive manufacturing applications

Data in Brief ◽  
2018 ◽  
Vol 19 ◽  
pp. 936-950 ◽  
Author(s):  
Ngoc A. Nguyen ◽  
Christopher C. Bowland ◽  
Amit K. Naskar
Keyword(s):  
Additive Manufacturing ◽  
3D Printing ◽  
High Performance ◽  
Rheological Characteristics ◽  
Manufacturing Applications

3D Technology – Additive Manufacturing Applications and Prospects (Vol. 24, No. 9, Full Issue)

2020 ◽  
Vol 24 (09) ◽  
Keyword(s):  
Additive Manufacturing ◽  
3D Printing ◽  
Environmental Impact ◽  
Real World ◽  
Vaccine Development ◽  
Health Screening ◽  
Wide Range ◽  
The World ◽  
Real World Applications ◽  
Manufacturing Applications

For the month of September 2020, APBN dives into the world of 3D printing and its wide range of real-world applications. Keeping our focus on the topic of the year, the COVID-19 pandemic, we explore the environmental impact of the global outbreak as well as gain insight to the top 5 vaccine platforms used in vaccine development. Discover more about technological advancements and how it is assisting innovation in geriatric health screening.

Incorporation of fluorescent quantum dots for 3D printing and additive manufacturing applications

2018 ◽  
Vol 6 (28) ◽  
pp. 7584-7593 ◽  
Author(s):  
Cole D. Brubaker ◽  
Talitha M. Frecker ◽  
James R. McBride ◽  
Kemar R. Reid ◽  
G. Kane Jennings ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Additive Manufacturing ◽  
3D Printing ◽  
Quantum Dot ◽  
Fused Deposition Modeling ◽  
Fused Deposition ◽  
Cadmium Sulfur Selenide ◽  
Functionalized Materials ◽  
Deposition Modeling ◽  
Manufacturing Applications

3D printing of cadmium sulfur selenide quantum dot functionalized materials compatible with fused deposition modeling type processes and applications.

scholarly journals Ultra-High Early Strength Cementitious Grout Suitable for Additive Manufacturing Applications Fabricated by Using Graphene Oxide and Viscosity Modifying Agents

Polymers ◽  
2020 ◽  
Vol 12 (12) ◽  
pp. 2900
Author(s):  
Alyaa Mohammed ◽  
Nihad Tareq Khshain Al-Saadi
Keyword(s):  
Graphene Oxide ◽  
Additive Manufacturing ◽  
3D Printing ◽  
Design Method ◽  
Three Dimensional ◽  
Cementitious Materials ◽  
Fresh Properties ◽  
Manufacturing Applications ◽  
Mechanical Strengths ◽  
The Impact

One of the considerable challenges in the design of cementitious mixtures for additive manufacturing/three-dimensional (3D) printing applications is achieving both suitable fresh properties and significant mechanical strengths. This paper presents the use of graphene oxide (GO) as a promising nano reinforcement material with the potential to improve the printing feasibility and quality of a 3D printed cementitious matrix. Additionally, in this study, a viscosity modifying agent (VMA) was employed as a chemical additive to attain the required consistency and flow. The printed mixture was fabricated using various cementitious materials and waste materials. This study investigated the impact of GO and VMA on the enhancement of the 3D printing of cementitious composites through several tests. A flow test was conducted using the flow table test. The results showed a high fluidity and practical consistency, which are essential for nozzle pumping and accurateness in printed shapes. Furthermore, the bleeding test showed minimal bleeding up to hardening, and a considerable self-cleaning ability was noted during handling when conducting examinations of fresh properties. For hardened properties, the mechanical strengths were exceptionally high, especially at early ages, which is crucial for the stability of sequence layers of printed composites. The tensile strengths were 3.77, 10.5, 13.35, and 18.83 MPa at 1, 3, 7, and 28 days, respectively, and the compressive strengths were 25.1, 68.4, 85.6, and 125.4 MPa at 1, 3, 7, and 28 days, respectively. The test results showed the effectiveness of the fabricated cementitious mixture design method for meeting the requirements for 3D concrete printing applications.

3D Printing of Microwave and Millimeter-Wave Filters: Additive Manufacturing Technologies Applied in the Development of High-Performance Filters with Novel Topologies

2020 ◽  
Vol 21 (6) ◽  
pp. 24-45 ◽  
Author(s):  
Cristiano Tomassoni ◽  
Oscar Antonio Peverini ◽  
Giuseppe Venanzoni ◽  
Giuseppe Addamo ◽  
Fabio Paonessa ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
3D Printing ◽  
Millimeter Wave ◽  
High Performance ◽  
Manufacturing Technologies ◽  
Wave Filters ◽  
Millimeter Wave Filters

scholarly journals Experimental studies for the additive manufacturing of continuous fiber reinforced composites using UV-curing thermosets

2021 ◽  
Author(s):  
Eckart Kunze ◽  
Michael Müller-Pabel ◽  
Oliver Weißenborn ◽  
Ron Luft ◽  
Johann Faust ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
3D Printing ◽  
High Performance ◽  
Uv Curing ◽  
High Potential ◽  
Fiber Reinforced ◽  
Continuous Fiber ◽  
Print Head ◽  
Lightweight Structures ◽  
Thermoset Resin

The economical production of lightweight structures with tailor-made properties and load-adapted geometry is limited using conventional technologies. Additive manufacturing processes offer a high potential to meet these requirements, where the established solutions are based primarily on thermoplastics matrix systems. From a process-technological point of view, thermoplastics enable simplified processing, but only a limited range of applications for high-performance components. These limitations are due to their comparatively low heat resistance, low melting temperatures and limited adhesion to embedded reinforcing fibers. In contrast, thermosets show high potential for realization of high- performance lightweight structures with adaptable properties. The present work employs a UV-curing thermoset resin for the impregnation of a continuous filament strand for 3D printing. The main challenge is to reconcile the crosslinking reaction of the thermoset and the process velocity during impregnation and cure. The liquid polymer must provide low initial viscosity to impregnate the filaments and a sufficiently high cure rate and dimensional stability after discharge from the print head to ensure sufficient bonding strength to the substrate. To demonstrate feasibility, a prototypic print head with UV-LED activation was designed and implemented. With a robot-guided printing platform, the 3D-deposition of continuous fiber-reinforcements without additional supporting structures can be realized. To derive initial process parameters, reaction and thermos-mechanical properties are determined by rheometer measurements. Impregnation and cure behavior of the glass fiber reinforced resin is investigated. The presented results provide a reliable process window and a straightforward process monitoring method for further enhancement of the conceived 3D printing process.

scholarly journals The Field Guide to 3D Printing in Microscopy

2021 ◽  
Author(s):  
Mario Del Rosario ◽  
Hannah S. Heil ◽  
Afonso Mendes ◽  
Vittorio Saggiomo ◽  
Ricardo Henriques
Keyword(s):  
Additive Manufacturing ◽  
Open Access ◽  
3D Printing ◽  
Low Cost ◽  
Maker Movement ◽  
New Approach ◽  
Starting Point ◽  
Manufacturing Applications ◽  
Model Structures ◽  
The Maker Movement

The maker movement has reached the optics labs, empowering researchers to actively create and modify microscope designs and imaging accessories. 3D printing has especially had a disruptive impact on the field, as it entails an accessible new approach in fabrication technologies, namely additive manufacturing, making prototyping in the lab available at low cost. Examples of this trend are taking advantage of the easy availability of 3D printing technology. For example, inexpensive microscopes for education have been designed, such as the FlyPi. Also, the highly complex robotic microscope OpenFlexure represents a clear desire for the democratisation of this technology. 3D printing facilitates new and powerful approaches to science and promotes collaboration between researchers, as 3D designs are easily shared. This holds the unique possibility to extend the open-access concept from knowledge to technology, allowing researchers from everywhere to use and extend model structures. Here we present a review of additive manufacturing applications in microscopy, guiding the user through this new and exciting technology and providing a starting point to anyone willing to employ this versatile and powerful new tool.

scholarly journals How Can We Provide Additively Manufactured Parts with a Fingerprint? A Review of Tagging Strategies in Additive Manufacturing

Materials ◽  
2021 ◽  
Vol 15 (1) ◽  
pp. 85
Author(s):  
Antonella Sola ◽  
Yilin Sai ◽  
Adrian Trinchi ◽  
Clement Chu ◽  
Shirley Shen ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
3D Printing ◽  
Critical Analysis ◽  
High Performance ◽  
Literature Survey ◽  
End User ◽  
Front Line ◽  
Future Challenges ◽  
Complicated Geometries ◽  
Challenging Question

Additive manufacturing (AM) is rapidly evolving from “rapid prototyping” to “industrial production”. AM enables the fabrication of bespoke components with complicated geometries in the high-performance areas of aerospace, defence and biomedicine. Providing AM parts with a tagging feature that allows them to be identified like a fingerprint can be crucial for logistics, certification and anti-counterfeiting purposes. Whereas the implementation of an overarching strategy for the complete traceability of AM components downstream from designer to end user is, by nature, a cross-disciplinary task that involves legal, digital and technological issues, materials engineers are on the front line of research to understand what kind of tag is preferred for each kind of object and how existing materials and 3D printing hardware should be synergistically modified to create such tag. This review provides a critical analysis of the main requirements and properties of tagging features for authentication and identification of AM parts, of the strategies that have been put in place so far, and of the future challenges that are emerging to make these systems efficient and suitable for digitalisation. It is envisaged that this literature survey will help scientists and developers answer the challenging question: “How can we embed a tagging feature in an AM part?”.

scholarly journals Additive Manufacturing for Serial Production of High-Performance Metal Parts

2019 ◽  
Vol 141 (05) ◽  
pp. 49-50
Author(s):  
Markus Siebold
Keyword(s):  
Additive Manufacturing ◽  
3D Printing ◽  
High Performance ◽  
Layer By Layer ◽  
Laser Melting ◽  
Serial Production ◽  
Key Technology ◽  
Metal Parts ◽  
Solid Objects ◽  
Cad Models

Additive manufacturing (AM) is a process that builds parts layer-by-layer from sliced CAD models to form solid objects. Just a few years ago, 3D printing was primarily used for rapid prototyping. Due to improvements in performance, AM has the potential to become a new key technology for serial production. Innovative advances like selective laser melting (SLM) enable the manufacture of high-performance metal parts. Modern printers contain several lasers, which enables the production of multiple parts at the same time. AM includes much more than just 3D printing: It’s an end-to-end process, from design and simulation to 3D printing to post-processing.

High performance polymer nanocomposites for additive manufacturing applications

2016 ◽  
Vol 103 ◽  
pp. 141-155 ◽  
Author(s):  
Al C. de Leon ◽  
Qiyi Chen ◽  
Napolabel B. Palaganas ◽  
Jerome O. Palaganas ◽  
Jill Manapat ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
Polymer Nanocomposites ◽  
High Performance ◽  
High Performance Polymer ◽  
Manufacturing Applications

Lignin-Containing Photoactive Resins for 3D Printing by Stereolithography

2018 ◽  
Author(s):  
Jordan T. Sutton ◽  
Kalavathy Rajan ◽  
David P. Harper ◽  
Stephen Chmely
Keyword(s):  
Additive Manufacturing ◽  
New Products ◽  
High Surface ◽  
Fold Increase ◽  
Print Quality ◽  
Renewable Materials ◽  
Lignin Concentration ◽  
Environmentally Sustainable ◽  
Manufacturing Applications ◽  
Modified Lignin

Generating compatible and competitive materials that are environmentally sustainable and economically viable is paramount for the success of additive manufacturing using renewable materials. We report the successful application of renewable, modified lignin-containing photopolymer resins in a commercial stereolithography system. Resins were fabricated within operable ranges for viscosity and cure properties, using up to 15% modified lignin by weight with the potential for higher amounts. A four-fold increase in ductility in cured parts with higher lignin concentration is noted as compared to commercial SLA resins. Excellent print quality was seen in modified lignin resins, with good layer fusion, high surface definition, and visual clarity. These materials can be used to generate new products for additive manufacturing applications and help fill vacant material property spaces, where ductility, sustainability, and application costs are critical.

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